U.S. patent application number 14/508330 was filed with the patent office on 2015-04-16 for band and biological information measurement device.
The applicant listed for this patent is Seiko Epson Corporation. Invention is credited to Yoshihiro HIDAI, Junya SHIBUYA, Shigemitsu TANAKA.
Application Number | 20150102075 14/508330 |
Document ID | / |
Family ID | 51786794 |
Filed Date | 2015-04-16 |
United States Patent
Application |
20150102075 |
Kind Code |
A1 |
SHIBUYA; Junya ; et
al. |
April 16, 2015 |
BAND AND BIOLOGICAL INFORMATION MEASUREMENT DEVICE
Abstract
A band for mounting a device main body includes first and second
band portions which are connected to device main body, wherein the
ratio between the widths of the first band portion and the second
band portion in a second direction intersecting a first direction
in which the first band portion and the second band portion extend
from the device main body and the width of the device main body in
the second direction is greater than or equal to 0.5 and less than
or equal to 1.4.
Inventors: |
SHIBUYA; Junya;
(Azumono-shi, JP) ; HIDAI; Yoshihiro;
(Shiojiri-shi, JP) ; TANAKA; Shigemitsu;
(Okaya-shi, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Seiko Epson Corporation |
Shinjuku-ku |
|
JP |
|
|
Family ID: |
51786794 |
Appl. No.: |
14/508330 |
Filed: |
October 7, 2014 |
Current U.S.
Class: |
224/267 |
Current CPC
Class: |
G04B 37/148 20130101;
A44C 5/185 20130101; A44C 5/0015 20130101; A61B 5/0059 20130101;
A44C 5/0069 20130101; A44B 11/24 20130101; A44C 5/0053 20130101;
A61B 5/6831 20130101; A44B 11/22 20130101; A61B 5/681 20130101;
A44C 5/2071 20130101 |
Class at
Publication: |
224/267 |
International
Class: |
A44C 5/00 20060101
A44C005/00 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 11, 2013 |
JP |
2013-213479 |
Claims
1. A band for mounting a device main body, comprising: first and
second band portions which are connected to a device main body,
wherein a ratio between widths of the first band portion and the
second band portion in a second direction intersecting a first
direction in which the first band portion and the second band
portion extend from the device main body and a width of the device
main body in the second direction is greater than or equal to 0.5
and less than or equal to 1.4.
2. The band according to claim 1, further comprising: a connection
portion which is provided at an end portion of the first band
portion on the opposite side to the device main body and connects
the first band portion and the second band portion; and a hook
portion which is provided at an end portion of the second band
portion on the opposite side to the device main body and locks the
second band portion to the first band portion.
3. The band according to claim 2, wherein belt portions having
stretchability are provided between an end portion of the first
band portion, which is connected to the device main body, and the
connection portion and between an end portion of the second band
portion, which is connected to the device main body, and the hook
portion.
4. The band according to claim 3, wherein in the belt portions,
hole portions in which the connection portion or the hook portion
is inserted are provided in parallel in the second direction and to
form rows in the first direction.
5. The band according to claim 4, wherein each of the hole portions
has first and second holes provided coaxially, each of the first
hole and the second hole has an elliptical shape having a short
axis in the first direction and a long axis in the second
direction, and lengths of the short axis and the long axis of the
second hole are larger than lengths of the short axis and the long
axis of the first hole.
6. The band according to claim 3, wherein in the rows of the hole
portions of the first band portion, a distance between a row
closest to the device main body side and a row adjacent thereto is
narrower than a distance between a row closest to the connection
portion side and a row adjacent thereto.
7. The band according to claim 3, wherein in the rows of the hole
portions of the second band portion, a distance between a row
closest to the device main body side and a row adjacent thereto is
narrower than a distance between a row closest to the hook portion
side and a row adjacent thereto.
8. The band according to claim 2, wherein the first band portion
has a thick portion, the connection portion is provided at the
thick portion and includes a band insertion hole in which the
second band portion is inserted, and a projecting bar which is
pivotally supported on one side of the band insertion hole, which
extends in the second direction, and is inserted into the hole
portion provided in the second band portion, and the band insertion
hole is provided such that a side extending in the second
direction, which faces the one side on which the projecting bar is
pivotally supported, is long.
9. The band according to claim 2, wherein the hook portion is
provided with a base portion and a pin portion extending from the
base portion, and the pin portion has a first shaft portion
extending from the base portion, and a second shaft portion
extending from the first shaft portion.
10. The band according to claim 7, wherein in the pin portion, a
first head portion having a larger diameter than the first shaft
portion is provided at the first shaft portion, and a second head
portion having a larger diameter than the second shaft portion is
provided at the second shaft portion.
11. The band according to claim 7, wherein a length of the second
shaft portion in a third direction in which the pin portion extends
from the base portion is approximately the same as a depth of the
first hole, and a length of the second head portion in the third
direction is approximately the same as a depth of the second
hole.
12. The band according to claim 8, wherein the second shaft portion
and the second head portion have an elliptical shape having a short
axis in the first direction and a long axis in the second
direction, and in a case where the second head portion and the
first hole are viewed in plan from the third direction, an area of
the second head portion is larger than an area of the first
hole.
13. The band according to claim 8, wherein the second shaft portion
and the second head portion have an elliptical shape having a short
axis in the first direction and a long axis in the second
direction, and the long axis and the short axis of the second head
portion are larger than the long axis and the short axis of the
first hole.
14. The band according to claim 8, wherein each of the first head
portion and the second head portion has a curved surface in the
opposite direction to a direction in which the base portion is
provided.
15. The band according to claim 8, wherein in the belt portions, a
thickness in the third direction is approximately the same as a
value obtained by adding a length of the second shaft portion and a
length of the second head portion.
16. The band according to claim 3, wherein in the first band
portion and the second band portion, the belt portions are made of
a material which has stretchability and includes polyurethane resin
or silicone resin.
17. A biological information measurement device comprising: the
band according to claim 1; and a device main body on which the band
is mounted.
18. A biological information measurement device comprising: the
band according to claim 2; and a device main body on which the band
is mounted.
19. A biological information measurement device comprising: the
band according to claim 3; and a device main body on which the band
is mounted.
20. A biological information measurement device comprising: the
band according to claim 4; and a device main body on which the band
is mounted.
Description
BACKGROUND
[0001] 1. Technical Field
[0002] The present invention relates to a band for mounting a
timepiece or a measurement device main body of an electronic
measurement device which measures biological information on the
wrist or the like of a wearer, and a biological information
measurement device which is provided with the band.
[0003] 2. Related Art
[0004] In the past, an electronic device such as a measurement
device which is mounted on the wrist or the like of a wearer and
measures biological information such as the pulse or a wristwatch
having a function of measuring the biological information has been
known. In such an electronic device, it is necessary to bring a
device main body which performs measurement into close contact with
an appropriate site such as a wrist of the wearer. A band which is
mounted on a main body of such a measurement device or electronic
device and provided with a stretchable belt portion is disclosed in
JP-A-2012-90975.
[0005] The band described in JP-A-2012-90975 is provided with first
and second band members which are mounted on a device main body,
and a connecting member. Each band member has a stretchable portion
which expands and contracts along a band extension direction, and
the stretchable portion has flexibility and has a first slit having
a pair of slits following a width direction and a slit following
the band extension direction, and a pair of second slits
communicating with the outside of the stretchable portion along the
width direction. The connecting member is provided with a fixed
member, a sliding member slidable along the band extension
direction of the first band member, and a biasing member which
biases the sliding member in the opposite direction to the band
extension direction, and the sliding member is provided with a
connection portion (a projecting bar) which is connected to the
second band member.
[0006] When mounting such a biological information measurement
device on the wrist of a test object, a tensile force acts on the
band by an operation of a wearer, and a device main body is mounted
on the wrist in a state where the stretchable portion is extended
by the tensile force. Then, if the wearer removes the band from the
hand, a restoring force acts on the stretchable portion. In this
way, the band is tightened up, and thus the device main body can be
brought into close contact with the wrist regardless of the degree
of tightening of the device main body to the wrist by the
wearer.
[0007] In addition, in JP-A-2012-90975, as the stretchable portion,
a structure is shown in which an elastic material such as urethane
or silicone is provided in a meandering fashion in a direction
intersecting a direction in which a band member extends.
[0008] However, the band described in JP-A-2012-90975 described
above is thin compared to the width of the device main body in a
case of being viewed in plan from a vertical direction with respect
to a display surface of a display section provided at the portable
biological information measurement device and requires a great
tensile force and a restoring force of the stretchable portion in
order to stably mount the device main body. Therefore, a feeling of
pressure is given to the wrist or the like of a wearer by the
restoring force of the stretchable portion and a feeling of
discomfort is given to prolonged mounting. Further, the device main
body section is greatly visible, and therefore, there is also a
problem in that a visual feeling of pressure is given to the
wearer. Therefore, there is also a concern that a feeling of
pressure on a wrist or the like and a visual sensation may
adversely affect the biological information of a measurement
object.
SUMMARY
[0009] An advantage of some aspects of the invention is to solve at
least a part of the problems described above, and the invention can
be implemented as the following forms or application examples.
Application Example 1
[0010] This application example of the invention is directed to a
band for mounting a device main body including: first and second
band portions which are connected to a device main body, wherein
the ratio between the widths of the first band portion and the
second band portion in a second direction intersecting a first
direction in which the first band portion and the second band
portion extend from the device main body and the width of the
device main body in the second direction is greater than or equal
to 0.5 and less than or equal to 1.4.
[0011] According to such a band, the ratio between the widths of
the first and second band portions connected to the device main
body and the width of the device main body is greater than or equal
to 0.5 and less than or equal to 1.4. Therefore, a feeling of
pressure occurring due to the widths of the device main body and
the band becoming too thin is suppressed and a feeling of fatigue
occurring due to the widths of the device main body and the band
becoming too thick is suppressed, whereby it is possible to stably
mount the device main body. Further, it is possible to make the
device main body be viewed as small, and thus it is possible to
alleviate a visual feeling of pressure. Therefore, the influence on
the biological information of a test object on which the device
main body is mounted is alleviated, and thus it is possible to
obtain biological information with high precision by the device
main body mounted by the band.
Application Example 2
[0012] In the band according to the application example described
above, it is preferable that the band further includes: a
connection portion which is provided at an end portion of the first
band portion on the opposite side to the device main body and
connects the first band portion and the second band portion; and a
hook portion which is provided at an end portion of the second band
portion on the opposite side to the device main body and locks the
second band portion to the first band portion.
[0013] According to such a band, the second band portion is
connected to the first band portion by the connection portion
provided at the first band portion, and an end portion of the
connected second band portion is locked to the first band portion
by the hook portion. Therefore, the first band portion and the
second band portion are connected in the form of a ring, and play
of the end portion of the connected second band portion can be
suppressed. Therefore, when mounting the device main body mounted
on the band, release of the connection between the first band
portion and the second band portion due to being caught in clothes
or the like of a test object with the device main body mounted
thereon, and detachment of the device main body can be
suppressed.
Application Example 3
[0014] In the band according to the application example described
above, it is preferable that belt portions having stretchability is
provided between an end portion of the first band portion, which is
connected to the device main body, and the connection portion and
between an end portion of the second band portion, which is
connected to the device main body, and the hook portion.
[0015] According to such a band, the belt portions having
stretchability are provided. Therefore, by extending and mounting
the band when mounting the device main body, it is possible to
improve mountability by a force when the belt portions contract and
are restored. Therefore, it is possible to increase close contact
with a person on which the device main body is mounted, thereby
suppressing a shift of the mounted device main body.
Application Example 4
[0016] In the band according to the application example described
above, it is preferable that in the belt portions, hole portions in
which the connection portion or the hook portion is inserted are
provided in parallel in the second direction and to form rows in
the first direction.
[0017] According to such a band, the hole portions are provided in
parallel and to form rows in the belt portions. Therefore, a
position where the connection portion is inserted can be adjusted
according to the position of the hole portion. Therefore, it is
possible to connect the first band portion and the second band
portion at an optimum position in accordance with a test object on
which the device main body is mounted. Further, the end portion of
the second band portion connected to the first band portion can be
locked to the first band portion by inserting the hook portion into
the hole portion. Therefore, the end portion of the second band
portion can be locked without any play.
Application Example 5
[0018] In the band according to the application example described
above, it is preferable that in each of the hole portions, first
and second holes having an elliptical shape having a short axis in
the first direction and a long axis in the second direction are
coaxially provided and the short axis and the long axis of the
second hole are larger than the short axis and the long axis of the
first hole.
[0019] According to such a band, the hole portion has an elliptical
shape, whereby, when connecting the first band portion and the
second band portion, it is easy to insert a projecting bar, and
when the projecting bar is pressed against the hole portion
according to the expansion and contraction of the belt portion,
deformation of the hole portion can be suppressed. Further, the
first hole and the second hole, the short axis and the long axis of
which are larger than those of the first hole, are coaxially
provided, whereby it is possible to suppress the hook portion
locking the second band portion from protruding from the first band
portion. Therefore, it is possible to suppress deformation of the
hole portion due to being mounted and suppress a feeling of
discomfort which is given to a wearer due to protrusion of the hook
portion. Therefore, it is possible to realize a band which is easy
to be constantly mounted for a long period of time.
Application Example 6
[0020] In the band according to the application example described
above, it is preferable that in the rows of the hole portions of
the first band portion, a distance between a row closest to the
device main body side and a row adjacent thereto is narrower than a
distance between a row closest to the connection portion side and a
row adjacent thereto.
[0021] According to such a band, intervals of the hole portions in
a row direction are provided so as to be narrow on the connection
portion side, compared to an interval of the device main body side.
Therefore, when connecting the first band portion and the second
band portion and locking the second band portion to the first band
portion by the hook portion, it is possible to finely perform the
adjustment of a locking position of the second band portion by the
hook portion.
Application Example 7
[0022] In the band according to the application example, it is
preferable that in the rows of the hole portions of the second band
portion, a distance between a row closest to the device main body
side and a row adjacent thereto is narrower than a distance between
a row closest to the hook portion side and a row adjacent
thereto.
[0023] According to such a band, intervals of the hole portions in
the row direction are provided so as to be narrow on the hook
portion side, compared to an interval of the device main body side.
Therefore, when connecting the first band portion and the second
band portion by the connection portion, it is possible to finely
perform the adjustment of a connection position between the first
band portion and the second band portion. Therefore, it is possible
to easily adjust the strength of mounting the device main body on a
test object.
Application Example 8
[0024] In the band according to the application example described
above, it is preferable that the first band portion has a thick
portion, the connection portion is provided at the thick portion
and includes a band insertion hole in which the second band portion
is inserted, and a projecting bar which is pivotally supported on
one side of the band insertion hole, which extends in the second
direction, and is inserted into the hole portion provided in the
second band portion, and the band insertion hole is provided such
that a side extending in the second direction, which faces the one
side on which the projecting bar is pivotally supported, is
long.
[0025] According to such a band, the band insertion hole in which
the second band portion is inserted is provided such that the side
extending in the second direction, which faces the one side on
which the projecting bar is pivotally supported, is long.
Therefore, it is possible to insert the second band portion into
the band insertion hole and easily extend the belt portion
configuring the second band portion. Therefore, it is possible to
realize a band in which it is possible to stably mount the device
main body on a test object by a restoring force of the belt portion
which contracts.
Application Example 9
[0026] In the band according to the application example described
above, it is preferable that the hook portion is provided with a
base portion and a pin portion extending from the base portion and
the pin portion has a first shaft portion extending from the base
portion, and a second shaft portion extending from the first shaft
portion.
[0027] According to such a band, in the hook portion, the first
shaft portion extends from the base portion and the second shaft
portion extends from the first shaft portion. Therefore, the hook
portion is mounted on the second band portion by inserting the
first shaft portion into the hole portion provided in the second
band portion, and the first shaft portion extending from the second
shaft portion can be inserted into the hole portion provided in the
first band portion. Therefore, it is possible to lock the second
band portion to the first band portion.
Application Example 10
[0028] In the band according to the application example, it is
preferable that in the pin portion, a first head portion having a
larger diameter than the first shaft portion is provided at the
first shaft portion and a second head portion having a larger
diameter than the second shaft portion is provided at the second
shaft portion.
[0029] According to such a band, the first shaft portion is
inserted into the hole portion provided in the second band portion
and the first head portion is caught in the hole portion, whereby
it is possible to suppress the hook portion from being detached
from the second band portion. Further, the second shaft portion is
inserted into the hole portion provided in the first band portion
and the second head portion is caught in the hole portion, whereby
it is possible to lock the second band portion to the first band
portion. Therefore, it is possible to suppress detachment of the
hook portion and the locked second band portion.
Application Example 11
[0030] In the band according to the application example described
above, it is preferable that a length of the second shaft portion
in a third direction in which the pin portion extends from the base
portion is approximately the same as a depth of the first hole and
a length of the second head portion in the third direction is
approximately the same as a depth of the second hole.
[0031] According to such a band, since the length of the second
shaft portion is approximately the same as the depth of the first
hole and the length of the second head portion is approximately the
same as the depth of the second hole, it is possible to suppress
the second shaft portion and the second head portion inserted into
the hole portion provided in the first band portion from protruding
from the first band portion. Therefore, it is possible to suppress
a feeling of discomfort which is given to a wearer by protrusion of
the hook portion. Therefore, it is possible to provide a band which
is easy to be constantly mounted for a long period of time.
Application Example 12
[0032] In the band according to the application example described
above, it is preferable that the second shaft portion and the
second head portion have an elliptical shape having a short axis in
the first direction and a long axis in the second direction and an
area of the second head portion when the second head portion and
the first hole are viewed in plan from the third direction is
larger than an area of the first hole.
[0033] According to such a band, in the pin portion inserted into
the hole portion provided in the first band portion, the area of
the second head portion is larger than the area of the first hole,
and therefore, the second head portion is caught in the first hole,
and thus it is possible to suppress the pin portion from easily
coming out of the hole portion. Therefore, it is possible to lock
the second band portion to the first band portion and suppress the
second band portion from being detached from the first band
portion.
Application Example 13
[0034] In the band according to the application example described
above, it is preferable that the second shaft portion and the
second head portion have an elliptical shape having a short axis in
the first direction and a long axis in the second direction and the
long axis and the short axis of the second head portion are larger
than the long axis and the short axis of the first hole.
[0035] According to such a band, in the pin portion inserted into
the hole portion provided in the first band portion, the short axis
and the long axis of the second head portion are larger than the
short axis and the long axis of the first hole, and therefore, the
second head portion is caught in the first hole, and thus it is
possible to suppress the pin portion from easily coming out of the
hole portion. Therefore, it is possible to lock the second band
portion to the first band portion and suppress the second band
portion from being detached from the first band portion.
Application Example 14
[0036] In the band according to the application example, it is
preferable that each of the first head portion and the second head
portion has a curved surface in the opposite direction to a
direction in which the base portion is provided.
[0037] According to such a band, each of the first head portion and
the second head portion has a curved surface in the opposite
direction to a direction in which the base portion is provided,
whereby it is possible to suppress contact resistance when
inserting the pin portion having the first shaft portion and the
second shaft portion into the hole portion. Therefore, the force
when locking the second band portion to the first band portion
requires a larger force when extracting the pin portion, that is,
when detaching the first band portion from the second band portion
than when inserting the pin portion into the first band portion.
Therefore, it is possible to lock the second band portion to the
first band portion and suppress the second band portion from being
detached from the first band portion.
Application Example 15
[0038] In the band according to the application example described
above, it is preferable that in the belt portions, a thickness in
the third direction is approximately the same as lengths of the
second shaft portion and the second head portion.
[0039] According to such a band, the thickness of the belt portion
is approximately the same as the value obtained by adding the
lengths of the second shaft portion and the second head portion,
whereby it is possible to lock the second band portion to the first
band portion without protrusion of the second head portion from the
belt portion.
Application Example 16
[0040] In the band according to the application example described
above, it is preferable that in the first band portion and the
second band portion, the belt portions are formed of polyurethane
having stretchability.
[0041] According to such a band, it is possible to increase a close
contact force of the device main body with a wearer by a restoring
force occurring by mounting the device main body with the band
mounted thereon by extending the belt portion, and then releasing a
tensile force extended. Further, by using polyurethane for the belt
portion, compared to a band using a belt portion made of metal, a
reduction in weight is attained, and thus it is possible to
alleviate a feeling of pressure to a wearer of the device main
body. Therefore, it is possible to suppress a feeling of discomfort
which is given to the wearer. Therefore, it is possible to provide
a band which is easy to be constantly mounted.
Application Example 17
[0042] This application example of the invention is directed to a
biological information measurement device including: the band
described above; and a device main body on which the band is
mounted.
[0043] According to such a biological information measurement
device, the width of the band mounted on the device main body has
approximately the same width as the device main body. Therefore,
the device main body and the band are in contact with a test object
to have approximately the same contact area, and thus a feeling of
pressure to a wrist or the like due to prolonged mounting is
suppressed, and thus it is possible to stably mount the device main
body. Further, the device main body can be viewed as small, and
thus a feeling of pressure can be alleviated also in terms of a
visual sensation. Therefore, it is possible to realize a biological
information measurement device in which the influence on the
biological information of a test object on which the device main
body is mounted is alleviated, and thus it is possible to obtain
biological information with high precision by the device main body
mounted by the band.
BRIEF DESCRIPTION OF THE DRAWINGS
[0044] The invention will be described with reference to the
accompanying drawings, wherein like numbers reference like
elements.
[0045] FIG. 1 is a top view schematically showing the external
appearance of a biological information measurement device with a
band according to an embodiment mounted thereon.
[0046] FIGS. 2A and 2B are perspective views schematically showing
the external appearance of the biological information measurement
device with the band according to the embodiment mounted
thereon.
[0047] FIG. 3 is a development view schematically showing the
structure of the biological information measurement device with the
band according to the embodiment mounted thereon.
[0048] FIGS. 4A and 4B are a plan view and a cross-sectional view
schematically showing a first band portion.
[0049] FIGS. 5A and 5B are cross-sectional views schematically
showing the cross-section of a hole portion of the first band
portion on an enlarged scale.
[0050] FIGS. 6A to 6C are a plan view and cross-sectional views
schematically showing a second band portion.
[0051] FIGS. 7A to 7C are cross-sectional views schematically
showing the cross-section of a hole portion of the second band
portion on an enlarged scale.
[0052] FIGS. 8A and 8B are enlarged views showing a hook portion
provided at the band according to the embodiment on an enlarged
scale.
DESCRIPTION OF EXEMPLARY EMBODIMENTS
[0053] Hereinafter, an embodiment of the invention will be
described using the drawings. In addition, in each drawing shown
below, in order to show each constituent element in size to the
extent that can be recognized on the drawing, there is a case where
the dimension or the ratio of each constituent element is described
differently from that of the actual constituent element.
[0054] A band according to this embodiment and a portable
biological information measurement device will be described using
FIGS. 1 to 8B.
[0055] FIG. 1 is a top view schematically showing the external
appearance of a biological information measurement device with a
band according to an embodiment mounted thereon. FIGS. 2A and 2B
are perspective views schematically showing the external appearance
of the biological information measurement device with the band
mounted thereon. FIG. 3 is a development view schematically showing
the structure of the biological information measurement device with
the band mounted thereon. FIGS. 4A and 4B are a plan view and a
cross-sectional view schematically showing a first band portion.
FIGS. 5A and 5B are cross-sectional views schematically showing the
cross-section of a hole portion of the first band portion on an
enlarged scale. FIGS. 6A to 6C are a plan view and cross-sectional
views schematically showing a second band portion. FIGS. 7A to 7C
are cross-sectional views schematically showing the cross-section
of a hole portion of the second band portion on an enlarged scale.
FIGS. 8A and 8B are enlarged views showing a hook portion provided
at the band on an enlarged scale.
Schematic Configuration of Biological Information Measurement
Device 1
[0056] A biological information measurement device 1 (hereinafter
referred to simply as a "measurement device 1") according to this
embodiment is an electronic device which is mounted on the wrist or
the like of a test object (for example, a human body), biological
information of which is measured, and measures biological
information such as the pulse. The measurement device 1 is formed
to have an external appearance similar to a wristwatch, as shown in
FIGS. 1, 2A, and 2B. The measurement device 1 is provided with a
device main body 2 which comes into close contact with a test
object, thereby measuring biological information, and a band
section 3 which is mounted on the device main body 2.
Configuration of Device Main Body 2
[0057] The device main body 2 of the measurement device 1 shown in
FIGS. 2A, 2B, and 3 is provided with a module 20, and a case
section 200 in which the module 20 is accommodated. The module 20
is provided with a display section 220, a processing section 240, a
power supply section 260, and a sensor section 280.
[0058] In the case section 200, a concave portion 200b in which the
module 20 is accommodated is formed on the lid section 210 side
thereof. The module 20 is accommodated in the concave portion 200b
and the lid section 210 is disposed so as to cover the concave
portion 200b and is fixed by setscrews 211. Materials of the case
section 200 and the lid section 210 are not particularly limited.
In this embodiment, as an example thereof, nylon-based synthetic
resin (plastic resin) in which the occurrence of cracks are hard is
used.
[0059] The display section 220 configuring the module 20 is
provided at the case section 200.
[0060] In the display section 220, a display panel 222 is provided
and biological information measurement data such as the number of
pulses, time information such as the current time, or the like is
displayed according to each display mode. Further, a backlight 224
is provided in the display section 220 and can illuminate the
display panel 222.
[0061] As long as the display panel 222 can display biological
information (mainly, a numeral or a graph configured by a dot
matrix) such as the pulse, a display method is not limited. In the
measurement device 1, as an example thereof, a liquid crystal
display device is used.
[0062] Further, as for the backlight 224, as long as it is possible
to perform illumination to the extent that biological information
which is displayed on the display panel 222 is visible, a
luminescence method or a luminescent color is not limited. In the
measurement device 1, the illumination of the display panel 222 is
performed by using an electro-luminescence (EL) panel which emits
green light.
[0063] In the case section 200, a display window 200a is provided
on the opposite side to the side on which the lid section 210 is
provided. The display window 200a is configured such that
biological information or the like which is displayed on the
display section 220 is visible. Further, a display section cover
202 formed of transparent resin, transparent glass, or the like is
fitted into the display window 200a, and the display section 220 is
protected by the display section cover 202.
[0064] The processing section 240 configuring the module 20 is
provided in the case section 200.
[0065] The processing section 240 is a substrate configured by a
semiconductor device such as a microcomputer, or a storage device.
The display section 220, an operating section 250, the power supply
section 260, the sensor section 280 are connected to the processing
section 240. The processing section 240 processes the driving of
the sensor section 280 or a signal based on the pulse detected in
the sensor section 280, thereby performing the display processing
of biological information or the like in the display section 220.
Further, the processing section 240 performs the storing of
biological information and performs communication with an
information processing device (not shown) provided outside the
measurement device 1, thereby being able to output the stored
data.
[0066] The operating section 250 providing a command to the
processing section 240 is provided in the case section 200.
[0067] In the operating section 250, an operation button 252
capable of being pressed is provided. By pressing the operation
button 252, it is possible to perform switching of a pulse
measurement mode of displaying, for example, pulse measurement
data, a clock mode of displaying the current time or the like, a
remaining battery level display mode, a lighting mode of the
backlight 224 of the display section 220, or the like.
[0068] Further, the operation button 252 can be provided in a
plurality. By providing the plurality of operation buttons 252 and
pressing the operation buttons 252 at substantially the same time,
it is possible to perform switching to a setting mode of performing
the setting of the measurement device 1. In the measurement device
1 according to this embodiment, as an example thereof, two
operation buttons 252a and 252b are provided in the measurement
device 1. An operation of the operating section 250 by a test
object can be performed by pressing the operation button 252a by an
index finger and adding a force associated with the pressing to the
case section 200 through a thumb.
[0069] Further, an operation can be performed by pressing the
operation button 252b by a ring finger and adding a force
associated with the pressing to the case section 200 through a
thumb. Therefore, it is preferable that an interval at which the
operation buttons 252a and 252b are provided is an interval in
which fingers (for example, a thumb and a ring finger) performing
the operation do not overlap, in a range that the fingers
performing the operation reach.
[0070] A charging terminal 264 which is used in the charging of a
battery 262 installed in the power supply section 260 which serves
as the power supply of the measurement device 1 is provided in the
case section 200. In addition, a communication terminal 266 which
is used in data communication of biological information (data)
measured and stored in the measurement device 1, measurement
setting data, and the like is provided in the case section 200.
[0071] In addition, the battery 262 is not limited to a
rechargeable secondary battery and a primary battery such as a
lithium battery can be used.
[0072] A sensor unit 282 is provided in the sensor section 280. The
sensor unit 282 is a light sensor and is provided with a sensor
case, and a sensor substrate with a light emitting element and a
light receiving element mounted thereon. The sensor unit 282
irradiates light toward the wrist of a test object from the light
emitting element such as a light emitting diode (LED) and receives
the light reflected by a blood vessel of the wrist by the light
receiving element such as a photodiode.
[0073] A sensor bank portion 212 in which the sensor section 280 is
accommodated is provided at the lid section 210. The sensor section
280 is provided on the sensor bank portion 212 having a disk shape
raised from the lid section 210 in the opposite direction to a
display direction of the display section 220. The sensor bank
portion 212 is provided with a sensor convex portion 214.
[0074] The sensor convex portion 214 is provided so as to be
pressed against (be brought into contact with) the wrist or the
like of a test object with the measurement device 1 mounted
thereon. The sensor convex portion 214 is provided with a base
portion 214a extending from the lid section 210, and a tip portion
214b which is pressed against a test object.
[0075] From this, it is preferable that the base portion 214a of
the sensor convex portion 214 is made of a material having a light
shielding property. Further, it is preferable that the tip portion
214b is made of a material capable of transmitting light which is
emitted from the light emitting element. Further, it is preferable
that the tip portion 214b has a shape which suppresses irregular
reflection of the light and in which a test object does not feel
pain at the time of mounting.
[0076] Therefore, the base portion 214a is provided by using the
same synthetic resin as the lid section 210 and applying
light-shielding coloring thereto. Further, the tip portion 214b is
provided to have an arc shape by using transparent glass or
transparent acrylic resin.
Configuration of Band Section 3
[0077] Returning to FIGS. 1, 2A, and 2B, the configuration of the
band section 3 will be described. The band section 3 is provided in
order to mount the device main body 2 on a test object.
[0078] The bands 3 are provided at both ends of the device main
body 2, as shown in FIGS. 1, 2A, and 2B. A first band portion 30
configuring the band section 3 is mounted on a lug 203 (a lug on
the twelve o'clock side in a timepiece as a first direction) of the
device main body 2 by a mounting member 32. Further, a second band
portion 40 configuring the band section 3 is mounted on a lug 204
(a lug on the six o'clock side in a timepiece as the first
direction) of the device main body 2 by a mounting member 42.
[0079] A connection portion 310 which connects the first band
portion 30 and the second band portion 40 is provided at the first
band portion 30. The connection portion 310 is provided at an end
portion of the first band portion 30 on the opposite side to the
device main body 2 side. Further, a hook portion 410 which locks
the second band portion 40 to the first band portion 30 is provided
at the second band portion 40. The hook portion 410 is provided at
an end portion of the first band portion 30 on the opposite side to
the device main body 2 side.
[0080] In the following description, in the first band portion 30,
the device main body 2 side is described as being referred to as
"one end side" and the side on which the connection portion 310 is
provided on the opposite side thereto is described as being
referred to as the "other end side". Similarly, in the second band
portion 40, the device main body 2 side is described as being
referred to as "one end side" and the side on which the hook
portion 410 is provided on the opposite side thereto is described
as being referred to as the "other end side".
Configuration of First Band Portion
[0081] The first band portion 30 shown in FIGS. 3 and 4A has a belt
portion 34, a cover portion 320 as a first connection portion (an
end portion) provided on one end side (the device main body 2 side,
in a Y2 direction shown in FIGS. 3 and 4A) of the belt portion 34,
and the connection portion 310 on the other end side (the opposite
side to the device main body 2, in a Y1 direction shown in FIGS. 3
and 4A).
[0082] The belt portion 34 has front and back surfaces. In the
following description, the surface coming into contact with a wrist
when having been mounted on a test object is described as being
referred to as a back surface 34b of the belt portion 34, and the
surface being the opposite surface thereto and being visible when
having been mounted is described as being referred to as a front
surface 34a of the belt portion 34.
Mounting on Device Main Body 2
[0083] The first band portion 30 is mounted on the device main body
2 such that the cover portion 320 covers the lug 203, with the
mounting member 32 sandwiched between the lug 203 and the cover
portion 320.
[0084] The cover portion 320 and the lug 203 are pivotally
supported by inserting a "spring rod" (not shown) into a hole 32h
provided in the mounting member 32 and a "rod hole 203h" provided
in the lug 203 and locking both ends of the spring rod to locking
holes 320h provided in the cover portion 320.
Belt Portion 34
[0085] The belt portion 34 shown in FIGS. 4A and 4B has
stretchability in order to mount the device main body 2 in close
contact with the wrist or the like of a test object. The belt
portion 34 is made using a material which includes polyurethane
resin or silicone resin, thereby having stretchability and
flexibility according to the characteristics of the material.
[0086] The belt portion 34 is provided with the thickness (in a Z
direction shown in FIG. 4B) of a central portion in a direction of
a width 30W increased in a cross-section (a cross-section in line
E-E' shown in FIG. 4A) in a direction (a second direction, an X
direction shown in FIG. 4A) intersecting a direction (a first
direction, the Y1 direction shown in FIG. 4A) in which the first
band portion 30 extends from the device main body 2. The belt
portion 34 is provided with the thickness of the central portion in
the direction of the width 30W increased, whereby strength at the
time of expansion and contraction and strength at the time of
flexion are secured.
[0087] A hole portion 330 (a "child hole" in a timepiece) in which
the hook portion 410 provided at the second band portion 40 is
locked is provided in the belt portion 34. The hole portions 330
are provided in parallel in the direction of the width 30W (the
second direction, the X direction shown in FIGS. 4A and 4B) and to
be aligned to form rows in a direction (the first direction, the Y
direction shown in FIG. 4A) in which the belt portion 34 extends. A
line spacing of the hole portions 330 may be disposed so as to be
almost constant and may also be disposed such that the line spacing
becomes shorter as it goes in a direction of the device main body
2, that is, the Y2 direction from the other end. In other words,
the line spacing is disposed such that a distance (a second pitch)
between the last row in the Y2 direction and a row adjacent thereto
becomes narrow compared to a distance (a first pitch) between the
last row of the hole portion 330 on the Y1 direction side and a row
adjacent thereto. Or, the line spacing is disposed such that the
first pitch is wider than the second pitch. Due to such a
configuration, even for a test object in which a site of mounting
the measurement device 1 is thin, it is possible to finely adjust
tightening, and therefore, it becomes easy to perform setting so as
to be able to fix the measurement device 1 with an appropriate
strength.
[0088] In the hole portion 330, as shown in FIGS. 4B and 5A, a hole
331 provided on the front surface 34a side of the belt portion 34
and a hole 332 provided on the back surface 34b side of the belt
portion 34 are coaxially provided.
[0089] The hole portion 330 has an elliptical shape having a long
axis (a major diameter) in the direction of the width 30W (the X
direction) of the belt portion 34 and a short axis (a minor
diameter) in an orthogonal direction (the Y direction) in which the
first band portion 30 extends from the device main body 2, as shown
in FIG. 5B. The long axis and the short axis orthogonal to the long
axis of the hole portion 330 are provided to be longer (larger) in
the hole 332 than in the hole 331.
[0090] Further, the depth of each of the holes 331 and 332 is made
to be a depth in which a tip of a pin 414 provided at the hook
portion 410 (described later) does not protrude from the back
surface 34b of the belt portion 34.
[0091] In the band section 3 according to this embodiment, the hole
portion 330 is provided such that the dimension (the size) of the
hole 331 is approximately 4.0 mm in the long axis direction and
approximately 2.5 mm in the short axis direction and the dimension
(the size) of the hole 332 is approximately 5.0 mm in the long axis
direction and approximately 3.5 mm in the short axis direction.
Connection Portion 310
[0092] Returning to FIGS. 4A and 4B, the configuration of the
connection portion 310 will be described.
[0093] The connection portion 310 is provided on the other end side
(in the Y1 direction shown in FIG. 4A) of the belt portion 34.
[0094] A thick portion 345 in which the thickness of the belt
portion 34 is increased compared to a portion in which the hole
portions 330 are provided is provided on the other end side of the
belt portion 34. The connection portion 310 is provided at the
thick portion 345 in which the thickness of the belt portion 34 is
increased. A band insertion hole 312 into which the second band
portion 40 is inserted and a projecting bar 314 which is inserted
into a hole portion 430 (refer to FIGS. 6A to 6C) provided in the
second band portion 40 are provided at the connection portion
310.
[0095] In the connection portion 310, the band insertion hole 312
is provided such that a width 312W in a direction intersecting a
direction (the Y1 direction shown in FIG. 4A) in which the first
band portion 30 extends from the device main body 2 is wider than a
width 40W (refer to FIG. 6A) of the second band portion 40.
[0096] More specifically, a width on a side of one side (the Y1
side shown in FIG. 4A) on which a concave portion 312c (described
later) is provided is provided to be wider than a width on the side
of one side (the Y2 side shown in FIG. 4A) on which a locking hole
312h in which the projecting bar 314 (described later) is locked is
provided.
[0097] The band insertion hole 312 is provided such that the width
on the Y1 side is wider, whereby it is possible to easily insert
the second band portion 40 therein. Further, it is possible to
increase the close contact of the device main body 2 with a wrist
by extending the second band portion 40 by pulling the second band
portion 40 to the Y2 side with it being brought into contact with
an edge of the band insertion hole 312 on the Y1 side on which the
width is provided to be wide, and adjust tightening by the
restoring force of the second band portion 40 (a belt portion 44).
Further, since the connection portion 310 is provided at the thick
portion 345 in which the thickness of the belt portion 34 is
increased, even if deformation occurs by a force pulling the second
band portion 40, restoration can occur, and thus the deformation
can be suppressed.
[0098] The projecting bar 314 is pivotally supported on the belt
portion 34 by a "spring rod" (not shown) which is inserted into the
locking hole 312h provided at one side on the Y2 side at an inner
edge of the band insertion hole 312, and a hole (not shown)
provided in the projecting bar 314. A portion of the projecting bar
314 is fitted into the concave portion 312c provided at one side on
the Y1 side at the inner edge of the band insertion hole 312,
whereby the projecting bar 314 is locked to the belt portion
34.
[0099] In the projecting bar 314, two bar portions 3141 and 3142
are provided to extend in the Y1 direction from the side of one
side on the Y2 side at the inner edge of the band insertion hole
312. Further, in the projecting bar 314, a connection bar 3143 is
provided in the direction of the width 30W (the X direction shown
in FIG. 4A) of the belt portion 34 intersecting the Y1 direction in
which the bar portions 3141 and 3142 extend. The cross-sectional
shape of each of the bar portions 3141 and 3142 configuring the
projecting bar 314 has a flat shape. The projecting bar 314 has a
flat shape, whereby it is possible to increase a contact area when
having been inserted into the hole portion 430, suppress the hole
portion 430 from being extended, and suppress a shift of the
measurement device 1 mounted on a test object by the band section 3
according to this embodiment.
[0100] A material configuring the projecting bar 314 is not
particularly limited, and it is acceptable if it is a material
capable of withstanding the restoring forces of the belt portions
34 and 44. In this embodiment, as for the projecting bar 314, as an
example thereof, stainless steel is used. The projecting bar 314
can have toughness to withstand the restoring forces of the belt
portions 34 and 44 and corrosion resistance by using stainless
steel. Further, the projecting bar 314 is subjected to hairline
machining along a direction (the Y direction) in which the bar
portions 3141 and 3142 extend. By performing the hairline
machining, it is possible to increase the visibility of the
projecting bar 314, thereby aiding insertion into the hole portion
430.
[0101] In the band section 3 according to this embodiment, the
second band portion 40 is inserted into the band insertion hole 312
and the projecting bar 314 is inserted into the hole portion 430
provided in the second band portion 40, whereby the first band
portion 30 and the second band portion 40 are connected.
[0102] Here, it is required that the band section 3 brings the
device main body 2 into close contact with a test object in order
to measure the biological information of the test object and the
mounting position thereof is not shifted.
[0103] For this reason, the hole portions 430 are provided in
parallel in the second band portion 40, and the projecting bar 314
is inserted into the hole portion 430, whereby a shift of a
mounting position is suppressed (refer to FIGS. 6A to 6C). In the
connection portion 310, the bar portions 3141 and 3142 configuring
the projecting bar 314 are provided in parallel corresponding to
the hole portions 430 and an interval thereof is maintained by the
connection bar 3143. In this way, the projecting bar 314 has an
H-shape, and thus it is possible to easily insert the projecting
bar 314 into the hole portions 430 provided in parallel, while
maintaining an interval between the bar portions 3141 and 3142 by
the connection bar 3143.
Cover Portion 320
[0104] The cover portion 320 as the first connection portion is
provided on one end side (in the Y2 direction shown in FIG. 4A) of
the belt portion 34. The locking hole 320h is provided in the cover
portion 320.
[0105] The cover portion 320 is provided in order to connect the
first band portion 30 to the device main body 2 through the
mounting member 32. A width 320W of the cover portion 320 and a
width 2W of the device main body 2 have approximately the same
width (refer to FIG. 1).
[0106] More specifically, in a direction (the X direction shown in
FIGS. 1 to 4B) intersecting a direction (the Y1 direction shown in
FIGS. 1 to 4A) in which the first band portion 30 extends from the
device main body 2, the width 320W of the cover portion 320 and the
width 2W of the device main body 2 have approximately the same
width. In this way, the device main body 2 and the first band
portion 30 can be visible as being visually integrally formed, and
thus it is possible to alleviate a feeling of pressure due to
mounting. Further, since the device main body 2 does not protrude
from the first band portion 30 in the width direction (the X
direction), it is possible to suppress the clothes of a test object
from being caught in the device main body 2 at the time of
mounting.
Configuration of Second Band Portion
[0107] The second band portion 40 shown in FIGS. 3, and 6A has the
belt portion 44, a cover portion 420 as a second connection portion
(an end portion) provided on one end side (the device main body 2
side, in the Y1 direction shown in FIGS. 3 and 6A) of the belt
portion 44, and the hook portion 410 on the other end side (the
opposite side to the device main body 2, in the Y2 direction shown
in FIGS. 3 and 6A). In addition, in FIG. 6A, a concave portion 400c
in which the hook portion 410 is provided and a hole portion 440
are shown and illustration of the hook portion 410 is omitted.
[0108] The belt portion 44 has front and back surfaces, and in the
following description, the surface coming into contact with a wrist
when having been mounted on a test object is described as being
referred to as a back surface 44b of the belt portion 44 and the
surface being the opposite surface thereof and being visible when
having been mounted is described as being referred to as a front
surface 44a of the belt portion 44.
Mounting on Device Main Body 2
[0109] The second band portion 40 is mounted on the device main
body 2 such that the cover portion 420 covers the lug 204, with the
mounting member 42 sandwiched between the lug 204 and the cover
portion 320.
[0110] The cover portion 420 and the lug 204 are pivotally
supported by inserting a "spring rod" (not shown) into a hole 42h
provided in the mounting member 42 and a "rod hole 204h" provided
in the lug 204 and locking both ends of the spring rod to locking
holes 420h provided in the cover portion 420.
Belt Portion 44
[0111] The belt portion 44 shown in FIGS. 6A and 6B has
stretchability in order to mount the device main body 2 in close
contact with the wrist or the like of a test object. The belt
portion 44 is made using a material which includes polyurethane
resin or silicone resin, thereby having stretchability and
flexibility according to the characteristics of the material.
[0112] The belt portion 44 is provided with the thickness (in the Z
direction shown in FIG. 6B) of a central portion in a direction of
the width 40W increased in a cross-section (a cross-section in line
F-F' shown in FIG. 6A) in a direction (the second direction, the X
direction shown in FIG. 6A) intersecting a direction (the first
direction, the Y2 direction shown in FIG. 6A) in which the second
band portion 40 extends from the device main body 2. The belt
portion 44 is provided with the thickness of the central portion in
the direction of the width 40W increased, whereby strength at the
time of expansion and contraction and strength at the time of
flexion are secured.
[0113] The hole portion 430 in which the projecting bar 314
provided at the first band portion 30 is inserted is provided in
the belt portion 44. The hole portions 430 are provided in parallel
in the direction of the width 40W (the second direction, the X
direction shown in FIGS. 6A to 6C) and to be aligned to form rows
in a direction (the first direction, the Y direction shown in FIG.
6A) in which the belt portion 44 extends. A line spacing of the
hole portions 430 may be disposed so as to be almost constant and
may also be disposed so that the line spacing becomes shorter as it
goes in a direction from the other end to the device main body 2,
that is, the Y1 direction. In other words, the line spacing is
disposed such that a distance (a second pitch) between the last row
in the Y1 direction and a row adjacent thereto becomes narrow
compared to a distance (a first pitch) between the last row of the
hole portion 430 on the Y2 direction side and a row adjacent
thereto. Or, the line spacing is disposed such that the first pitch
is wider than the second pitch. Due to such a configuration, even
with respect to a test object in which a site of mounting the
measurement device 1 is thin, it is possible to finely adjust
tightening, and therefore, it becomes easy to set the measurement
device 1 with an appropriate strength.
[0114] In the hole portion 430, as shown in FIGS. 6B and 7A, a hole
431 provided on the front surface 44a side of the belt portion 44
and a hole 432 provided on the back surface 44b side of the belt
portion 44 are coaxially provided.
[0115] The hole portion 430 has an elliptical shape having a long
axis (a major diameter) in the direction of the width 40W (the X
direction) of the belt portion 44 and a short axis (a minor
diameter) in an orthogonal direction (the Y direction) in which the
second band portion 40 extends from the device main body 2, as
shown in FIG. 7B. The long axis and the short axis orthogonal to
the long axis of the hole portion 430 are provided to be longer
(larger) in the hole 432 than in the hole 431.
[0116] In addition, the elliptical shape that the holes 431 and 432
have is a shape according to the cross-sectional shape of the
projecting bar 314 provided at the connection portion 310 described
above and may be appropriately changed in accordance with the
cross-sectional shape of the projecting bar 314.
[0117] In the band section 3 according to this embodiment, the hole
portion 430 is provided such that the size of the hole 431 is
approximately 4.0 mm in the long axis direction and approximately
2.5 mm in the short axis direction and the size of the hole 432 is
approximately 5.0 mm in the long axis direction and approximately
3.5 mm in the short axis direction. The holes 431 and 432 have an
elliptical shape, thereby being able to be easily deformed, and
thus the insertion of the projecting bar 314 can be easily
performed. In addition, a restoring force after deformation is also
excellent.
[0118] In the belt portion 44, symbol m is denoted between the hole
portions 430 provided in parallel. The symbols m are denoted to
form order toward the direction (the Y2 direction shown in FIG. 6A)
in which the second band portion 40 extends from the device main
body 2. The symbols m are denoted as "1, 2, 3, . . . , and 17" in
order from the device main body 2 side (the Y1 side shown in FIG.
6A) in a case of being, for example, a numeral. Further, in a case
of being an alphabet letter, the symbols can be denoted as "a, b,
c, . . . " in order from the device main body 2 side. In a case of
using an alphabet letter, compared to a case of using a numeral, it
is possible to indicate a permutation of a lot of hole portions 430
with the same letter size. That is, it is possible to indicate a
permutation of the hole portions 430 of the number equivalent to
the twenty-five letters of the alphabet with one letter while
maintaining the size of the letter. The font of the symbol m is not
particularly limited as long as it is possible to indicate the
order of the hole portions 430.
[0119] The symbols m are denoted on the belt portion 44, whereby,
when constantly mounting the measurement device 1 on a wrist or the
like, it is possible to easily identify the optimum position for
inserting the projecting bar 314 in order to connect the first band
portion 30 and the second band portion 40, and thus it is possible
to mount the measurement device 1 without seeking the position of
the hole portion 430 for inserting the projecting bar 314 which is
optimum for each mounting. Further, the symbol m is denoted between
the hole portions 430 provided in parallel, and therefore, it is
possible to denote the symbol to the second band portion 40 without
newly providing a space (an area).
[0120] Further, as shown in FIG. 6C, the concave portion 400c in
which a base portion 412 of the hook portion 410 (described later)
is fitted and the hole portion 440 in which the pin 414 extending
from the base portion 412 is inserted are provided in the belt
portion 44.
[0121] The concave portion 400c has a concave shape conforming to
an outer peripheral edge of the base portion 412 on the front
surface 44a of the belt portion 44. Further, a depth 400d of the
concave portion 400c is provided to be approximately the same
dimension as a thickness 412t of the base portion 412.
[0122] The hole portions 440 are provided in parallel in the
direction of the width 40W (the X direction) and coaxially with the
pins 414 extending from the base portion 412, at a bottom portion
of the concave portion 400c, as shown in FIG. 7C.
[0123] In the hole portion 440, a hole 441 provided in the bottom
portion of the concave portion 400c on the front surface 44a side
of the belt portion 44 and a hole 442 provided in the back surface
44b of the belt portion 44 are coaxially provided.
[0124] The hole portion 440 has an elliptical shape having a long
axis (a major diameter) in the direction of the width 40W of the
belt portion 44 and a short axis (a minor diameter) in an
orthogonal direction (the Y direction) in which the second band
portion 40 extends from the device main body 2. The long axis and
the short axis orthogonal to the long axis of the hole portion 440
are provided to be longer (larger) in the hole 442 than in the hole
441.
[0125] In addition, the elliptical shape that the holes 441 and 442
have is a shape according to the shape of the pin 414 provided at
the hook portion 410 (described later) and may be appropriately
changed in accordance with the shape of the pin 414.
[0126] In the band section 3 according to this embodiment, the hole
portion 440 is provided such that the size of the hole 441 is
approximately 4.0 mm in the long axis direction and approximately
2.5 mm in the short axis direction and the size of the hole 442 is
approximately 5.0 mm in the long axis direction and approximately
3.5 mm in the short axis direction.
Hook Portion 410
[0127] The configuration of the hook portion 410 will be described
using FIGS. 8A and 8B while referring to FIGS. 1 to 3.
[0128] As shown in FIGS. 1 to 3, the hook portion 410 is provided
on the other end side (in the Y2 direction shown in FIGS. 1 to 3)
of the belt portion 44.
[0129] As shown in FIGS. 8A and 8B, the hook portion 410 is
provided with the base portion 412 and the pins 414 extending from
the base portion 412. The pin 414 is configured to include a first
shaft portion 416 and a second shaft portion 418. The hook portion
410 is a member for locking the second band portion 40 inserted
into the connection portion 310 to the first band portion 30 by
inserting the pins 414 into the hole portions 330 provided in the
first band portion 30.
[0130] In the hook portion 410, the plurality of pins 414 are
provided in accordance with an interval of the hole portions 330
provided in parallel in the direction of the width 30W (the X
direction shown in FIGS. 1 to 3) of the belt portion 34.
[0131] Since the pin 414 is inserted into the hole portion 440
provided in the second band portion 40 and the hole portion 330 of
an elliptical shape provided in the first band portion 30, the
cross-sectional shape thereof is an elliptical shape. The pin 414
is formed into an elliptical shape having a long axis (a major
diameter) in the direction of the width 30W of the belt portion 34
(the direction of the width 40W of the belt portion 44) and a short
axis (a minor diameter) in an orthogonal direction (the Y
direction) in which the second band portion 40 extends from the
device main body 2.
[0132] In the hook portion 410, the first shaft portion 416
configuring the pin 414 is provided so as to protrude from the base
portion 412. Further, the second shaft portion 418 is provided at
one end (in a Z2 direction shown in FIGS. 8A and 8B, one end on the
opposite side to the base portion 412 from which the first shaft
portion 416 extends) of the first shaft portion 416.
[0133] A first head portion 417 is provided at the first shaft
portion 416. The first head portion 417 is provided on the opposite
side (in the Z2 direction shown in FIGS. 8A and 8B) to the base
portion 412 from which the first shaft portion 416 extends. The
first head portion 417 has a curved surface 417r at an outer
peripheral edge on the side (in the Z2 direction shown in FIGS. 8A
and 8B) on which the second shaft portion 418 is provided.
[0134] The diameter of the first head portion 417 is provided to be
larger than the diameter of the first shaft portion 416. Further,
the diameter of the first head portion 417 is provided to be larger
than the diameter of the hole 441 and smaller than the diameter of
the hole 442.
[0135] In the band section 3 according to this embodiment, the
dimension (the size) of a shaft portion 416s of the first shaft
portion 416 is provided to be approximately 4.0 mm in the long axis
direction and approximately 2.5 mm in the short axis direction.
Further, the dimension (the size) of the first head portion 417 of
the first shaft portion 416 is provided to be approximately 5.5 mm
in the long axis direction and approximately 4.0 mm in the short
axis direction and to have the radius of curvature R of the curved
surface 417r of 0.3 mm.
[0136] Further, a second head portion 419 is provided at the second
shaft portion 418. The second head portion 419 is provided on the
opposite side (in the Z2 direction shown in FIGS. 8A and 8B) to the
first shaft portion 416 from which the second shaft portion 418
extends. The second head portion 419 has a curved surface 419r at
an outer peripheral edge on the opposite side (in the Z2 direction
shown in FIGS. 8A and 8B) to the side on which the first shaft
portion 416 is provided. The diameter of the second head portion
419 is provided to be larger than the diameter of the second shaft
portion 418. Further, the diameter of the first head portion 417 is
provided to be larger than the diameter of the hole 331 provided in
the hole portion 330 in which a tip portion 318 is inserted and
smaller than the diameter of the hole 332.
[0137] In the band section 3 according to this embodiment, the size
of a shaft portion 418s of the second shaft portion 418 is provided
to be approximately 3.8 mm in the long axis direction and
approximately 2.0 mm in the short axis direction. Further, the size
of the second head portion 419 of the second shaft portion 418 is
provided to be approximately 4.8 mm in the long axis direction and
approximately 3.2 mm in the short axis direction and to have the
radius of curvature R of the curved surface 419r of 0.8 mm.
[0138] Here, the thickness (in a direction in which the pin 414
extends, the thickness in the Z direction shown in FIGS. 8A and 8B)
of the base portion 412 and the length (in the direction in which
the pin 414 extends, the length in the Z direction shown in FIGS.
8A and 8B) of the pin 414 are determined depending on the depths of
the hole portion 440 and the hole 331 (the hole portion 330).
[0139] The thickness 412t of the base portion 412 in this
embodiment is approximately 1.5 mm and is approximately the same as
the depth of the concave portion 400c. A length 416L of a shaft
portion of the first shaft portion 416 is approximately 1.4 mm and
is approximately the same as the depth (the length) of the hole
441. A length (a thickness) 417L of the first head portion 417 of
the first shaft portion 416 is approximately 0.5 mm and is
approximately the same as the depth (the length) of the hole 442. A
length 418L of a shaft portion of the second shaft portion 418 is
approximately 1.9 mm and is approximately the same as the depth
(the length) of the hole 331. A length (a thickness) 419L of the
second head portion 419 of the second shaft portion 418 is
approximately 0.8 mm and is approximately the same as the depth
(the length) of the hole 332.
[0140] In the hook portion 410, the base portion 412 is fitted into
the concave portion 400c provided in the front surface 44a of the
belt portion 44. In addition, the pins 414 extending from the base
portion 412 are inserted into the hole portions 440 provided in
parallel in the direction of the width 40W of the belt portion 44,
whereby the hook portion 410 is provided at the belt portion 44.
The hook portion 410 is provided such that when having been
provided at the belt portion 44, the second shaft portions 418
protrude from the back surface 44b of the belt portion 44. The
second shaft portions 418 protrude from the belt portion 44,
thereby being able to be inserted into the hole portions 330
provided in the first band portion 30 (the belt portion 34).
[0141] In this way, in the first shaft portion 416 inserted into
the hole 441, the first head portion 417 is caught in the hole 441,
and thus it is possible to suppress the hook portion 410 from being
detached from the belt portion 44.
[0142] More specifically, due to the curved surface 417r provided
at the first head portion 417, it is possible to reduce contact
resistance occurring when inserting the first shaft portion 416
into the hole 441. In addition, the curved surface 417r is not
provided at the first head portion 417 on the base portion 412
side, and therefore, when extracting the first shaft portion 416
from the hole 441, a larger force than the force at the time of
insertion is required. Therefore, it is possible to suppress the
hook portion 410 from being detached from the belt portion 44.
[0143] Further, in the second shaft portion 418 inserted into the
hole portion 330, the second head portion 419 is caught in the hole
331 provided in the first band portion 30, and thus it is possible
to lock the second band portion 40 to the first band portion 30.
Further, it is possible to suppress detachment of the second band
portion 40 locked to the first band portion 30.
[0144] More specifically, due to the curved surface 419r provided
at the second head portion 419, it is possible to reduce contact
resistance occurring when inserting the second shaft portion 418
into the hole 331. In addition, the curved surface 419r is not
provided at the second head portion 419 on the first shaft portion
416 side, and therefore, when extracting the second shaft portion
418 from the hole 331, a larger force than the force at the time of
insertion is required. Therefore, it is possible to suppress
detachment of the second band portion 40 locked to the first band
portion 30.
Cover Portion 420
[0145] The cover portion 420 as the second connection portion is
provided on one end side (in the Y1 direction shown in FIG. 6A) of
the belt portion 44. The locking hole 420h is provided in the cover
portion 420.
[0146] The cover portion 420 is provided in order to connect the
second band portion 40 to the device main body 2 through the
mounting member 42. A width 420W of the cover portion 420 and the
width 2W of the device main body 2 have approximately the same
width (refer to FIG. 1).
[0147] More specifically, in a direction (the X direction shown in
FIGS. 1 to 3, or FIGS. 6A to 6C) intersecting the direction (the Y1
direction shown in FIGS. 1 to 3, or FIG. 6A) in which the second
band portion 40 extends from the device main body 2, the width 420W
of the cover portion 420 and the width 2W of the device main body 2
have approximately the same width. In this way, the device main
body 2 and the second band portion 40 can be visible as being
formed visually integrally, and thus it is possible to alleviate a
feeling of pressure due to mounting. Further, since the device main
body 2 does not protrude from the second band portion 40 in the
width direction (the X direction), it is possible to suppress the
clothes of a wearer from being caught in the device main body 2 at
the time of mounting.
Ratio Between Widths of Device Main Body 2 and Band Section 3
[0148] In this embodiment, it is preferable that the ratio between
the width of the band section 3 (the width 320W of the cover
portion 320 and the width 420W of the cover portion 420) and the
width 2W of the device main body 2 is in a range of 0.5 to 1.4.
[0149] As a result of response evaluation by the inventors, if the
ratio is less than 0.5, the band section 3 is too thin with respect
to the device main body 2, and therefore, it does not lead to the
solution of a problem of the related art in that there is a feeling
of pressure at the time of mounting of the device main body 2. On
the other hand, if the ratio exceeds 1.4, the band section 3 is too
thick with respect to the device main body 2, and therefore, the
size of the measurement device 1 which includes the device main
body 2 or the band section 3 becomes too large, and thus a problem
in that the size becomes a size which is inappropriate for a test
object to continue to wear for a long period of time occurs.
[0150] Therefore, in the measurement device 1 according to this
embodiment, the ratio between the width (320W and 420W) of the band
section 3 and the width 2W of the device main body 2 is provided to
be approximately 1.0. In this way, it is possible to stably mount
the measurement device 1 on a test object and suppress a feeling of
pressure which is given to the test object.
[0151] According to the embodiment described above, the following
effects can be obtained.
[0152] In the band section 3 and the measurement device 1 in which
the band section 3 is connected to the device main body 2, the
widths 320W and 420W of the band section 3 mounted on the device
main body 2 have approximately the same width as the width 2W of
the device main body 2. Therefore, a feeling of pressure to a wrist
or the like due to prolonged mounting is suppressed, whereby it is
possible to stably mount the device main body 2, and a feeling of
pressure is suppressed also in terms of a visual sensation, whereby
it is possible to make the device main body 2 be viewed as small.
Therefore, it is possible to realize the band section 3 in which it
is possible to suppress the influence on the biological information
of a person on which the device main body 2 is mounted, and the
measurement device 1 in which it is possible to obtain biological
information with high precision.
[0153] In addition, in this embodiment, as the measurement device
1, an example having a function of measuring biological information
has been described. However, the invention is not limited thereto,
and it is possible to carry out the invention as a portable
electronic information device which collects and displays a variety
of information. By varying the configuration of the module 20
configuring the device main body 2, it is possible to apply the
invention as, for example, a navigation device or a communication
device.
[0154] The entire disclosure of Japanese Patent Application No.
2013-213479, filed Oct. 11, 2013 is expressly incorporated by
reference herein.
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